Definition
The degree to which a system, device or process is ready to perform its required functions at a specified time and under specified conditions.
Human Explanation
It shows how often a solution is ready for use when needed.
Why it Matters
High Availability limits Downtime and supports operational continuity.
Conceptual Boundary
Availability is not the same as Service Availability. It is a general concept applicable to systems, equipment and processes.
Practical Perspective
Availability is influenced by Reliability, Maintainability, planned interruptions and repair time.